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Respiration in Animals and Plants — BIOLOGY STD 7 — Question

ICSE BoardEnglish MediumSTD 7BIOLOGYRespiration in Animals and Plants3 Marks
Question
Differentiate between:
bronchi and alveoli.
✓

Answer

Bronchi
  • The two branching tube of trachea are called bronchi.
  • There are two bronchi
  • The walls of bronchi are not richly supplied with blood capillaries.
Alveoli :
  • The out growths of microscopic air sacs are called alveoli.
  • There are millions of alveolar sacs.
  • The walls of the bronchioles are richly supplied with blood capillaries.

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